We booked also for March 2011. This will be our third trip to CSS. My suggestions are to read the MB, look at the pictures. It does really look that beautiful! I would suggest trying all the restaurants, all are good. The beach party & Gala are really good and fun. Definitely go to Dunns River Falls, you have to do it once. Also try the spa. Most of all, relax and enjoy time with your special someone!
At the front desk they will have a list of different activities you can go on at your own expense. For instance, you can go swim with dolphins, go on the Blue Mountain Bike Tour or go on a raft tour on a river. I would recommend Dunns Rivers Fall, it is a fun experience to climb up the falls and you can take some pics with your camera (bring a water one). We saw Mystic Mountain (I think is the name) when we passed by the last time in 2009. It is a bomb sled ride and I think there is something else to do, but I didn't research that yet. We may do that this year. We did the shopping excursion and that was fine. It was nice to go out and shop, but the airport has a good shopping section. If I can find my list of excursions, I will add it to this post. A lot of it depends on how much time you have and how long you want to be away from the resort. There are also activities to do at the resort too, like a snorkeling trip.